Ahsoka explores what happens to the titular character between her departure from Star Wars: The Clone Wars and her reappearance in Star Wars Rebels.[1] A year after the events of Revenge of the Sith, Anakin has succumbed to the dark side and become Darth Vader, and Ahsoka has gone into hiding. Under the name "Ashla", she gains work as a mechanic and freighter pilot with the powerful Fardi clan on the planet Thabeska. However, she is forced to go into hiding after exposing her Force powers while trying to save the life of four-year-old Hedala Fardi, the youngest Fardi daughter.
Ahsoka settles down on the agrarian moon of Raada where she befriends several local farmers including the teenage sisters Kaeden and Miara Larte, and their guardian Vartan. Ahsoka finds work as a mechanic and befriends the Larte sisters. The Galactic Empire subsequently establishes a presence on Raada and forces the farmers to plant new crops, which leach the moon's soils. Ahsoka becomes the leader of a resistance movement. However, the planned uprising goes awry and Ahsoka exposes her Force powers during a skirmish with Imperial forces. In response, the Empire dispatches a Jedi-hunting Inquisitor known as the Sixth Brother to hunt Ahsoka.
Having attracted the attention of the Empire, Ahsoka is forced to leave Raada. Princess Leia's adopted father Senator Bail Organa takes an interest in Imperial reports about Ahsoka and decides to find her. Returning to the Fardis, Ahsoka resumes work as a pilot and mechanic. She learns that a "shadow" (who turns out to be the Sixth Brother) has been stalking the Force-sensitive Hedala. With the Empire tightening its grip on Thabeska, the Fardi patriarch advises Ahsoka to leave. While fleeing a Black Sun gangster, Ahsoka's ship is captured by two pilots in the service of Senator Organa.
Mistaking the pilots for threats, Ahsoka knocks them unconscious. She encounters R2-D2 and convinces him to smuggle her aboard Senator Organa's corvette. Ahsoka forges an alliance with Senator Organa in return for his help in protecting Force-sensitive children from the Empire. Returning to Raada, she finds Miara and learns that the Sixth Brother captured her older sister Kaeden. Following a lightsaber duel, Ahsoka defeats and kills the Sixth Brother, and takes his Kyber crystals to forge her new twin lightsabers, which now have white blades. After freeing Kaeden, Ahsoka organizes an evacuation of Raada's population with Senator Organa's help. Senator Organa's rebel fleet manages to evacuate the Raada farms following a skirmish with Imperial forces.
Following the events on Raada, Ahsoka decides to join Senator Organa's rebellion while the Larte sisters and the other refugees settle down on Alderaan. Seeing that someone needs to make it possible for the balance of power to shift, Ahsoka chooses "Fulcrum" as her code-name. Meanwhile, the Empire dispatches the Grand Inquisitor, a perennial antagonist from Star Wars Rebels, to hunt down Ahsoka.
Ahsoka was popular with readers, debuting at #1 on The New York Times Best Seller list for Young Adults, staying there for three weeks, and remaining on the list for eight weeks.[10] The book also reached #28 overall on the USA Today best-seller list.[11]